1 files changed, 87 insertions, 0 deletions
diff --git a/src/main/java/org/onap/dcae/common/publishing/DMaaPEventPublisher.java b/src/main/java/org/onap/dcae/common/publishing/DMaaPEventPublisher.java
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+/*-
+ * ============LICENSE_START=======================================================
+ * org.onap.dcaegen2.restconfcollector
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * Copyright (C) 2018 Nokia. All rights reserved.
+ * Copyright (C) 2018-2019 Huawei. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.dcae.common.publishing;
+
+import com.att.nsa.cambria.client.CambriaBatchingPublisher;
+import io.vavr.collection.Map;
+import io.vavr.control.Try;
+import org.json.JSONObject;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.IOException;
+
+import static org.onap.dcae.common.publishing.VavrUtils.f;
+
+/**
+ * @author Pawel Szalapski (pawel.szalapski@nokia.com)
+ */
+class DMaaPEventPublisher implements EventPublisher {
+    private static final int PENDING_MESSAGE_LOG_THRESHOLD = 100;
+    private static final Logger log = LoggerFactory.getLogger(DMaaPEventPublisher.class);
+    private final DMaaPPublishersCache publishersCache;
+    private final Logger outputLogger;
+
+    DMaaPEventPublisher(DMaaPPublishersCache publishersCache,
+                        Logger outputLogger) {
+        this.publishersCache = publishersCache;
+        this.outputLogger = outputLogger;
+    }
+
+    @Override
+    public void sendEvent(JSONObject event, String domain) {
+
+        publishersCache.getPublisher(domain)
+                .onEmpty(() ->
+                        log.warn(f("Could not find event publisher for domain: '%s', dropping message: '%s'", domain, event)))
+                .forEach(publisher -> sendEvent(event, domain, publisher));
+    }
+
+    @Override
+    public void reconfigure(Map<String, PublisherConfig> dMaaPConfig) {
+        log.info("reconfigure ");
+        publishersCache.reconfigure(dMaaPConfig);
+    }
+
+    private void sendEvent(JSONObject event, String domain, CambriaBatchingPublisher publisher) {
+        Try.run(() -> uncheckedSendEvent(event, domain, publisher))
+                .onFailure(exc -> closePublisher(event, domain, exc));
+    }
+
+    private void uncheckedSendEvent(JSONObject event, String domain, CambriaBatchingPublisher publisher)
+            throws IOException {
+        int pendingMsgs = publisher.send("MyPartitionKey", event.toString());
+        if (pendingMsgs > PENDING_MESSAGE_LOG_THRESHOLD) {
+            log.info("Pending messages count: " + pendingMsgs);
+        }
+        String infoMsg = f("Event: '%s' scheduled to be send asynchronously on domain: '%s'", event, domain);
+        log.info(infoMsg);
+        outputLogger.info(infoMsg);
+    }
+
+    private void closePublisher(JSONObject event, String domain, Throwable e) {
+        log.error(f("Unable to schedule event: '%s' on domain: '%s'. Closing publisher and dropping message.",
+                event, domain), e);
+        publishersCache.closePublisherFor(domain);
+    }
+}